Culled from Curly Nikki website:
How to use Jamaican black castor oil is a popular question I’m asked regularly. Castor oil is a great hair oil, but it can be very thick and viscous. So some women may end up having a bad hair experience with the oil. In fact, it’s not uncommon for a woman to get immediately turned off from using this oil because it left her hair all sticky and icky. Still this oil is simply amazing for the health of your hair and scalp. So check out these few tips on how to best use castor oil. Then try out this oil for a few weeks – who knows? You may just fall in love too!
Tips for Using Castor Oil:
1. Moisturize Hair First
Before using any emollient (i.e. hair oil or butter), you always want to make sure that your hair has been wet first (i.e. your hair that has been moisturized first). Emollients don’t “moisturize,” they simply “seal” moisture in. So the best way to use castor oil is on wet or moisturized hair.
2. Use Less Oil
Castor oil is very thick and viscous so you don’t need to be “heavy-handed” with use. Using a lot of castor oil won’t increase its benefits – it will just make your hair sticky and limp. And with castor oil, as well as many other emollients, you will find oftentimes that when using “less is more.” Also, because it is a “heavier oil,” some women do prefer to only use castor oil on certain parts of their hair. For example, some may only use castor oil the edges of hair as opposed to using it all over their hair.
3. Mix With Other Oils
Since castor oil is so thick and heavy, it may be best to “lighten” it up with other oils. There’s no law that says you can’t mix your emollients.